body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f5f5;
  color: #222;
  max-width: 700px;
  margin: 40px auto;
  padding: 20px;
  text-align: center;
}

audio {
  width: 100%;
  margin-top: 20px;
}

h1 {
  margin-bottom: 10px;
}